Why is food important for the human body? Mention 4 main purposes.

Your body needs food to obtain energy, to get building blocks for your body, and to get substances that help control body processes. Nutrients, chemicals in food that your body needs, include carbohydrates, proteins, lipids, vitamins, and minerals.

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i'd say that the moon rock is about 2.2 billion years old.

"d.) carbon dioxide and hydrogen sulfide"